Same article by Joe Pinsker in The Atlantic, all dated 6 December 2021 at 12:47pm (or no time stamp):
Is It Safe to Hang Out With the Unboosted? How to make everyday risk assessments when there are many shades of what it means to be vaccinated. Source: https://archive.md/7qRe4
How to Socialize Safely in the Booster Era. This winter, there are many shades of what it means to be vaccinated. Here’s how to make everyday risk assessments. Source: https://www.theatlantic.com/family/archive/2021/12/covid-booster-fully-vaccinated-omicron/620916/ (currently posted as of 15 December 2021)
The Winter of Complicated Vaccination Statuses. Some people are unboosted. Others mixed and matched the brands of their shots. Which differences matter? Source: https://web.archive.org/web/20211206175314/https://www.theatlantic.com/family/archive/2021/12/covid-booster-fully-vaccinated-omicron/620916/